Window-sash lock.



H. KRAHE.

WINDOW SASH LOOK.

APPLIUATION FILED JUNE 16, 1913.

WITNESSES Patented Sept. 9, 1913.

, INVENTOR Hem/"y flFd/ HENRY KRAI-IE, OF NEW YORK, N. Y.

WINDOW-SASH LOCK.

To all whom it may concern:

Be it known that I, HENRY KRAI-IE, a citizen of the United States, and a resident of the city of New York, Stapleton, Staten Island, borough of Richmond, in the county of Richmond and State of New York, have invented a new and Improved lVindow- Sash Lock, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are: to provide a lock of the character mentioned, having a member pivotally mounted on one sash to swing in the path of the other sash to limit the movement thereof; to provide a latch for said pivoted member to hold the same in position to interfere with said other sash; to provide automatic locking means for said swinging member; to provide a latch for said swinging member, the operation whereof involves three distinct movements and the use of both hands; and to simplilfiy and economize the construction of the One embodiment of the present invention is shown in the accompanying drawings, in which Figure l is a perspective view of frag ments of window sashes having a lock mounted thereon constructed and arranged in accordance wit-h the present invention; Fig. 2 is a detail View, on an enlarged scale, in sectional elevation, showing a lock constructed and arranged in accordance with the present invention; Fig. 8 is a detail View, on an enlarged scale, of the latch with which the present lock is provided.

As seen in the drawings, the lock consists primarily of two pivotally connected wings 8 and 9. Said wings resemble hinge butts, the knuckles whereof are connected by short hinge pins 10. The wing 8 forms an attaching member for the lock, and is provided with a series of perforations to receive screw fasteners 11, whereby the lock may be rigidly mounted on the upper sash and preferably on the stile 12 thereof, and at any desired distance from the top rail 13 of the lower sash. When the lock is removed Specification of Letters Patent.

Application filed .Tune 16, 1913.

Patented Sept. 9, 1913.

Serial No. 773,933.

slightly from the top rail 13 of the lower sash, the sashes may be moved in their respective frames to provide ventilating open.- ings at the top and bot-tom of the window, or, if desired, one sash may be closed and the other removed from the head or sill of the window frame, to afford a ventilating space. Then the wing 9 of the lock is swung to the position such as shown in Fig. 1, the lower sash cannot be moved upward past said wing without destroying the same. The wing 9 is held in the outwardlyswung position by a latch 14, which is pivotally mounted, by a pin 15, upon the wing 8.

In the latch 14, to receive the pin 15, is an elongated pivot slot 16. By this means the latch may be drawn backward by grasping a handle 17 from its operative position, such as shown in Fig. 2 of the drawings, to permit a shoulder 18 formed on said latch to clear the upper edge of a slot 19 formed in a knuckle 20 provided on the wing 8. Normally, the latch is moved by a spring 21 to force the shoulder 18 into the slot 19. The spring 21 is anchored on the wing 8, between the knuckle 20 thereof and a retaining pin 22, as seen best in Fig. 2 of the drawings. The free end of the spring 21 is mounted in a recess or nick 23 formed in the latch 11. The set of the spring 21 is such as to normally advance the latch 11 to hold the shoulder 18 in the slot 19, and an elongated end 2e1- in a slot 25 formed in a knuckle 26, which is integrally formed on the wing 9. The slots 19 and 25 are registered only when the wings 8 and 9 are disposed in right-angle relation, as seen in Fig. 1 of the drawings. \Vhen the wing 9 is folded on the wing 8, the latch 11 is supported by the knuckle 26, at the end 24 thereof resting on the top of the knuckle 26. In this position, the spring 21 is bent to press down upon the latch, so that when the two slots register, the spring forces the end 21 into the slot 25, and when the shoulder 18 clears the upper edge of the slot 19, the latch 14 is moved lengthwise of the slot 16, with the result that the shoulder 18 is extended into the slot 19, to thereafter prevent the lift of the end 21 of the latch by any downward pun exerted on the nanoie 17. When now it is desired to release the lock or swing the wing 9 to close upon the wing 8, it becomes necessary to grasp the handle 17 to draw the latch 14 back until the shoulder 18 clears the upper edge of the slot 19. Having secured this clearance, the handle 17 is depressed to lift the shoulder 18 and the end 24 of the latch 14 until the latter is removed from the slot 25. WVhile the latch 14 is held in this position, the wing 9 is swung to close upon the wing 8. The handle 17 of the latch 14 may be thus released without the latch 14 rocking on the pin 15.

The wing 8 is provided with a recess or perforation 27 to extend over the head of the pin 15 to enable said wing to lie close on the wing 8. The projection of the lock thus constructed is very slight, even when the wing 8 is planted on the surface of the stile 12 without recessing said stile.

The upper edge of the handle 17 is curved, as seen best in Fig. 3 of the drawings, to provide a surface or edge over which a wire loop or other device inserted between the window sashes would slide or escape when drawn upon in the endeavor to tamper with the lock. To prevent the pos sible marring of the lower sash, the wing 8 is provided with a foot flange 28, said flange having a projection substantially as shown in the drawings, equal to the thickness of the wing 8. The flat surface thus presented to the lower sash avoids marring the same.

Claims.

1. A window sash lock, comprising a stationary wing member and a movable wing member pivotally connected and having interleaved hinge knuckles, two of said knuckles having elongated slots formed therein, said slots registering when said wings are disposed in perpendicular relation; and a manuallyoperated latch having an end adapted to move from one to the other of said slots to alternately release and lock said wings.

2. A window sash lock, comprising a stationary wing member and a movable wing member pivotally connected and having interleaved hinge knuckles, two of said knuckles having elongated slots formed therein, said slots registering when said wings are disposed in perpendicular relation; and a latch pivotally mounted on one of said wings, having an end adapted to alternately move into one or other of said slots.

3. A window sash lock, comprising a stationary wing member and a movable wing member pivotally connected and having interleaved hinge knuckles, two of said knuckles having elongated slots formed therein, said slots registering when said wings are disposed in perpendicular relation; a latch pivotally mounted on one OI sald wings, having an end adapted to alternately move into one or other of said slots; and a spring engaging said latch to move the same into locking position.

4. A window sash lock, comprising a stationary wing member and a movable wing member hingedly connected and having interleaved hinge knuckles, two of said knuckles being slotted lengthwise-to register when said members are in perpendicular relation; two hinge pins connecting said wing members, the inner ends of said pins being spaced apart adjacent said slots; a rocking latch mounted on one of said members to extend within the slots and to hold the wing members in perpendicular relation when the slots in said knuckles register, said latch having an elongated pivot slot; a pivot pin mounted in said pivot slot to permit lengthwise movement of said latch thereon; and means for manually manipulating said latch to dispose the same in one or both of the slots formed in said hinge knuckles.

5. A window sash lock, comprising a stationary wing member and a movable wing member hingedly connected and having interleaved hinge knuckles, two of said knuckles being slotted lengthwise to register when said members are in perpendicular relation; two hinge pins connecting said wing members, the inner ends of said pins being spaced apart adjacent said slots; a rocking latch mounted on one of said members to extend within the slots and to hold said wing members in perpendicular relation when the slots in said knuckles register, saidlatch having an elongated pivot slot and being provided with a shoulder adapted to enter said registering slots in company with the locking end of said latch; a pivot pin mounted in said pivot slot to permit lengthwise movement of said latch thereon; and means for manually manipulating said latch to dispose the same in one or both of the slots formed in said hinge knuckles.

6. A window sash lock, comprising a stationary wing member and a movable wing member hingedly connected and having interleaved hinge knuckles, two of said knuckles being slotted lengthwise to register when said members are in perpendicular relation; two hinge pins connecting said wing members, the inner ends of said pins being spaced apart adjacent said slots; a rocking latch mounted on one of said members to extend within the slots and to hold said wing members in perpendicular relation when the slots in said knuckles register, said latch having an elongated pivot slot and being provided with a shoulder adapted to enter said registering slots in company with the locking end of said latch; a pivot pin mounted in said pivot slot to permit lengthwise movement of said latch thereon; means In testimony whereof I have signed my for manually manipulating said latch to name to this specification in the presence of dispose the same in one or both of the slots two subscribing witnesses.

formed in said knuckles; and a spring to HENRY KRAHEa 5 normally move said latch toward said knuc- Witnesses:

kles and to rock said latch into locking rela- E. F. MURDOGK,

tion with said movable Wing member. PHILIP D. ROLLHAUS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

